## topochemical reaction

Synonym: topotactic reaction
https://doi.org/10.1351/goldbook.T06395
A reversible or irreversible reaction that involves the introduction of a @G02711@ species into a host structure and that results in significant structural modifications to the host, for example, the breakage of bonds. Example: The @I03058@ of lithium at $$50\,^{\unicode{x26ac}}\text{C}$$ into the spinel Li[Mn2]O4 with symmetry $$F\,\text{d3m}$$ to yield a layered structure with symmetry $$P\bar{3}\,\text{m1}$$.
T06395.png
Alternative terms: topotactic reaction, @I03058@ reaction.
Source:
PAC, 1994, 66, 577. (Definitions of terms relating to phase transitions of the solid state (IUPAC Recommendations 1994)) on page 592 [Terms] [Paper]